BEIJING - China National Coal Group Corp, the country's second-largest coal producer, on Monday reported a 35 percent year-on-year growth in profit to 16.38 billion yuan ($2.5 billion) in 2011.

The group's coal output in the year grew 11 percent to 164 million tons, a growth it attributed to structural adjustment and management innovation.

In 2012, the company aims to produce 170 million tonnes of coal and post a profit of 17.3 billion yuan.

Meanwhile, the company will step up international cooperation and seek appropriate overseas mergers and acquisitions, it said.